1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /** \file
3 * LPE <lattice> implementation
4
5 */
6 /*
7 * Authors:
8 * Johan Engelen <j.b.c.engelen@utwente.nl>
9 * Steren Giannini
10 * No� Falzon
11 * Victor Navez
12 *
13 * Copyright (C) 2007-2008 Authors
14 *
15 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
16 */
17
18 #include "live_effects/lpe-lattice.h"
19
20 #include "display/curve.h"
21
22 #include <2geom/sbasis-2d.h>
23 #include <2geom/bezier-to-sbasis.h>
24 // TODO due to internal breakage in glibmm headers, this must be last:
25 #include <glibmm/i18n.h>
26 using namespace Geom;
27
28 namespace Inkscape {
29 namespace LivePathEffect {
30
LPELattice(LivePathEffectObject * lpeobject)31 LPELattice::LPELattice(LivePathEffectObject *lpeobject) :
32 Effect(lpeobject),
33
34 // initialise your parameters here:
35 grid_point0(_("Control handle 0:"), _("Control handle 0"), "gridpoint0", &wr, this),
36 grid_point1(_("Control handle 1:"), _("Control handle 1"), "gridpoint1", &wr, this),
37 grid_point2(_("Control handle 2:"), _("Control handle 2"), "gridpoint2", &wr, this),
38 grid_point3(_("Control handle 3:"), _("Control handle 3"), "gridpoint3", &wr, this),
39 grid_point4(_("Control handle 4:"), _("Control handle 4"), "gridpoint4", &wr, this),
40 grid_point5(_("Control handle 5:"), _("Control handle 5"), "gridpoint5", &wr, this),
41 grid_point6(_("Control handle 6:"), _("Control handle 6"), "gridpoint6", &wr, this),
42 grid_point7(_("Control handle 7:"), _("Control handle 7"), "gridpoint7", &wr, this),
43 grid_point8(_("Control handle 8:"), _("Control handle 8"), "gridpoint8", &wr, this),
44 grid_point9(_("Control handle 9:"), _("Control handle 9"), "gridpoint9", &wr, this),
45 grid_point10(_("Control handle 10:"), _("Control handle 10"), "gridpoint10", &wr, this),
46 grid_point11(_("Control handle 11:"), _("Control handle 11"), "gridpoint11", &wr, this),
47 grid_point12(_("Control handle 12:"), _("Control handle 12"), "gridpoint12", &wr, this),
48 grid_point13(_("Control handle 13:"), _("Control handle 13"), "gridpoint13", &wr, this),
49 grid_point14(_("Control handle 14:"), _("Control handle 14"), "gridpoint14", &wr, this),
50 grid_point15(_("Control handle 15:"), _("Control handle 15"), "gridpoint15", &wr, this)
51
52 {
53 // register all your parameters here, so Inkscape knows which parameters this effect has:
54 registerParameter(&grid_point0);
55 registerParameter(&grid_point1);
56 registerParameter(&grid_point2);
57 registerParameter(&grid_point3);
58 registerParameter(&grid_point4);
59 registerParameter(&grid_point5);
60 registerParameter(&grid_point6);
61 registerParameter(&grid_point7);
62 registerParameter(&grid_point8);
63 registerParameter(&grid_point9);
64 registerParameter(&grid_point10);
65 registerParameter(&grid_point11);
66 registerParameter(&grid_point12);
67 registerParameter(&grid_point13);
68 registerParameter(&grid_point14);
69 registerParameter(&grid_point15);
70
71 apply_to_clippath_and_mask = true;
72 }
73
74 LPELattice::~LPELattice()
75 = default;
76
77
78 Geom::Piecewise<Geom::D2<Geom::SBasis> >
doEffect_pwd2(Geom::Piecewise<Geom::D2<Geom::SBasis>> const & pwd2_in)79 LPELattice::doEffect_pwd2 (Geom::Piecewise<Geom::D2<Geom::SBasis> > const & pwd2_in)
80 {
81 D2<SBasis2d> sb2;
82
83 //Initialisation of the sb2
84 for(unsigned dim = 0; dim < 2; dim++) {
85 sb2[dim].us = 2;
86 sb2[dim].vs = 2;
87 const int depth = sb2[dim].us*sb2[dim].vs;
88 sb2[dim].resize(depth, Linear2d(0));
89 }
90
91 //Grouping the point params in a convenient vector
92 std::vector<Geom::Point *> handles(16);
93
94 handles[0] = &grid_point0;
95 handles[1] = &grid_point1;
96 handles[2] = &grid_point2;
97 handles[3] = &grid_point3;
98 handles[4] = &grid_point4;
99 handles[5] = &grid_point5;
100 handles[6] = &grid_point6;
101 handles[7] = &grid_point7;
102 handles[8] = &grid_point8;
103 handles[9] = &grid_point9;
104 handles[10] = &grid_point10;
105 handles[11] = &grid_point11;
106 handles[12] = &grid_point12;
107 handles[13] = &grid_point13;
108 handles[14] = &grid_point14;
109 handles[15] = &grid_point15;
110
111 Geom::Point origin = Geom::Point(boundingbox_X.min(),boundingbox_Y.min());
112
113 double width = boundingbox_X.extent();
114 double height = boundingbox_Y.extent();
115
116 //numbering is based on 4 rectangles.
117 for(unsigned dim = 0; dim < 2; dim++) {
118 Geom::Point dir(0,0);
119 dir[dim] = 1;
120 for(unsigned vi = 0; vi < sb2[dim].vs; vi++) {
121 for(unsigned ui = 0; ui < sb2[dim].us; ui++) {
122 for(unsigned iv = 0; iv < 2; iv++) {
123 for(unsigned iu = 0; iu < 2; iu++) {
124 unsigned corner = iu + 2*iv;
125 unsigned i = ui + vi*sb2[dim].us;
126
127 //This is the offset from the Upperleft point
128 Geom::Point base( (ui + iu*(3-2*ui))*width/3.,
129 (vi + iv*(3-2*vi))*height/3.);
130
131 //Special action for corners
132 if(vi == 0 && ui == 0) {
133 base = Geom::Point(0,0);
134 }
135
136 // i = Upperleft corner of the considerated rectangle
137 // corner = actual corner of the rectangle
138 // origin = Upperleft point
139 double dl = dot((*handles[corner+4*i] - (base + origin)), dir)/dot(dir,dir);
140 sb2[dim][i][corner] = dl/( dim ? height : width )*pow(4.0,ui+vi);
141 }
142 }
143 }
144 }
145 }
146
147 Piecewise<D2<SBasis> > output;
148 output.push_cut(0.);
149 for(unsigned i = 0; i < pwd2_in.size(); i++) {
150 D2<SBasis> B = pwd2_in[i];
151 B -= origin;
152 B*= 1/width;
153 //Here comes the magic
154 D2<SBasis> tB = compose_each(sb2,B);
155 tB = tB * width + origin;
156
157 output.push(tB,i+1);
158 }
159
160 return output;
161 }
162
163 void
doBeforeEffect(SPLPEItem const * lpeitem)164 LPELattice::doBeforeEffect (SPLPEItem const* lpeitem)
165 {
166 original_bbox(lpeitem, false, true);
167 }
168
169 void
resetDefaults(SPItem const * item)170 LPELattice::resetDefaults(SPItem const* item)
171 {
172 Effect::resetDefaults(item);
173
174 original_bbox(SP_LPE_ITEM(item), false, true);
175
176 // place the 16 control points
177 grid_point0[Geom::X] = boundingbox_X.min();
178 grid_point0[Geom::Y] = boundingbox_Y.min();
179
180 grid_point1[Geom::X] = boundingbox_X.max();
181 grid_point1[Geom::Y] = boundingbox_Y.min();
182
183 grid_point2[Geom::X] = boundingbox_X.min();
184 grid_point2[Geom::Y] = boundingbox_Y.max();
185
186 grid_point3[Geom::X] = boundingbox_X.max();
187 grid_point3[Geom::Y] = boundingbox_Y.max();
188
189 grid_point4[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
190 grid_point4[Geom::Y] = boundingbox_Y.min();
191
192 grid_point5[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
193 grid_point5[Geom::Y] = boundingbox_Y.min();
194
195 grid_point6[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
196 grid_point6[Geom::Y] = boundingbox_Y.max();
197
198 grid_point7[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
199 grid_point7[Geom::Y] = boundingbox_Y.max();
200
201 grid_point8[Geom::X] = boundingbox_X.min();
202 grid_point8[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
203
204 grid_point9[Geom::X] = boundingbox_X.max();
205 grid_point9[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
206
207 grid_point10[Geom::X] = boundingbox_X.min();
208 grid_point10[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
209
210 grid_point11[Geom::X] = boundingbox_X.max();
211 grid_point11[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
212
213 grid_point12[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
214 grid_point12[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
215
216 grid_point13[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
217 grid_point13[Geom::Y] = 1.0/3*boundingbox_Y.max()+2.0/3*boundingbox_Y.min();
218
219 grid_point14[Geom::X] = 1.0/3*boundingbox_X.max()+2.0/3*boundingbox_X.min();
220 grid_point14[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
221
222 grid_point15[Geom::X] = 2.0/3*boundingbox_X.max()+1.0/3*boundingbox_X.min();
223 grid_point15[Geom::Y] = 2.0/3*boundingbox_Y.max()+1.0/3*boundingbox_Y.min();
224 grid_point1.param_update_default(grid_point1);
225 grid_point2.param_update_default(grid_point2);
226 grid_point3.param_update_default(grid_point3);
227 grid_point4.param_update_default(grid_point4);
228 grid_point5.param_update_default(grid_point5);
229 grid_point6.param_update_default(grid_point6);
230 grid_point7.param_update_default(grid_point7);
231 grid_point8.param_update_default(grid_point8);
232 grid_point9.param_update_default(grid_point9);
233 grid_point10.param_update_default(grid_point10);
234 grid_point11.param_update_default(grid_point11);
235 grid_point12.param_update_default(grid_point12);
236 grid_point13.param_update_default(grid_point13);
237 grid_point14.param_update_default(grid_point14);
238 grid_point15.param_update_default(grid_point15);
239 }
240
241 /**
242 void
243 LPELattice::addHelperPathsImpl(SPLPEItem *lpeitem, SPDesktop *desktop)
244 {
245 SPCurve *c = new SPCurve ();
246 c->moveto(grid_point0);
247 c->lineto(grid_point4);
248 c->lineto(grid_point5);
249 c->lineto(grid_point1);
250
251 c->moveto(grid_point8);
252 c->lineto(grid_point12);
253 c->lineto(grid_point13);
254 c->lineto(grid_point9);
255
256 c->moveto(grid_point10);
257 c->lineto(grid_point14);
258 c->lineto(grid_point15);
259 c->lineto(grid_point11);
260
261 c->moveto(grid_point2);
262 c->lineto(grid_point6);
263 c->lineto(grid_point7);
264 c->lineto(grid_point3);
265
266
267 c->moveto(grid_point0);
268 c->lineto(grid_point8);
269 c->lineto(grid_point10);
270 c->lineto(grid_point2);
271
272 c->moveto(grid_point4);
273 c->lineto(grid_point12);
274 c->lineto(grid_point14);
275 c->lineto(grid_point6);
276
277 c->moveto(grid_point5);
278 c->lineto(grid_point13);
279 c->lineto(grid_point15);
280 c->lineto(grid_point7);
281
282 c->moveto(grid_point1);
283 c->lineto(grid_point9);
284 c->lineto(grid_point11);
285 c->lineto(grid_point3);
286
287 // TODO: factor this out (and remove the #include of desktop.h above)
288 SPCanvasItem *canvasitem = sp_nodepath_generate_helperpath(desktop, c, lpeitem, 0x009000ff);
289 Inkscape::Display::TemporaryItem* tmpitem = desktop->add_temporary_canvasitem (canvasitem, 0);
290 lpeitem->lpe_helperpaths.push_back(tmpitem);
291
292 c->unref();
293 }
294 **/
295
296 /* ######################## */
297
298 } //namespace LivePathEffect
299 } /* namespace Inkscape */
300
301 /*
302 Local Variables:
303 mode:c++
304 c-file-style:"stroustrup"
305 c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
306 indent-tabs-mode:nil
307 fill-column:99
308 End:
309 */
310 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
311